<template>
  <div class="login_page fillcontain">
    <transition name="form-fade" mode="in-out">
      <section class="form_contianer" v-show="showLogin">
        <div class="manage_tip">
          <p>后台管理系统</p>
        </div>
        <el-form :model="loginForm" :rules="rules" ref="loginForm">
          <el-form-item prop="username">
            <el-input v-model="loginForm.username" placeholder="用户名"><span></span></el-input>
          </el-form-item>
          <el-form-item prop="password">
            <el-input type="password" placeholder="密码" v-model="loginForm.password"></el-input>
          </el-form-item>
          <el-form-item>
            <el-button type="primary" @click="login('loginForm')" class="submit_btn">登陆</el-button>
          </el-form-item>
          <el-form-item>
            <el-button type="primary" @click="register()" class="submit_btn">注册</el-button>
          </el-form-item>
        </el-form>
        <p class="tip">温馨提示：</p>
        <p class="tip">未登录过的新用户，自动注册</p>
        <p class="tip">注册过的用户可凭账号密码登录</p>
      </section>
    </transition>
  </div>
</template>

<script>
  import {login, getUserInfo} from '@/api/getData'
  import {mapActions, mapState} from 'vuex'


  export default {
    data() {
      return {
        loginForm: {
          username: '',
          password: '',
        },
        rules: {
          username: [
            {required: true, message: '请输入用户名', trigger: 'blur'},
          ],
          password: [
            {required: true, message: '请输入密码', trigger: 'blur'}
          ],
        },
        showLogin: false,
      }
    },
    mounted() {
      this.showLogin = true;
      if (!this.userInfo.id) {
        this.getUserData();
      }
    },
    computed: {
      ...mapState(['userInfo']),
    },
    methods: {
      ...mapActions(['getUserData']),

      login: async function (formName) {
        this.$refs[formName].validate(async (valid) => {
          if (!valid) {
            this.$notify.error({
              title: '错误',
              message: '请输入正确的用户名密码',
              offset: 100,
            });
            return false;
          }

          const data = {data: {user_name: this.loginForm.username, password: this.loginForm.password}};
          const res = await  login(data);
          if (res && 1 === res.status) {
            this.$message({
              type: 'success',
              message: '登录成功'
            });
            this.$router.push('manage');
          } else {
            this.$message({
              type: 'error',
              message: res.message
            });
          }
        });
      },

      register: function () {
      },
    },
    watch: {
      userInfo: function (newValue) {
        if (newValue.id) {
          this.$message({
            type: 'success',
            message: '检测到您之前登录过，将自动登录'
          });
          this.$router.push('manage');
        }
      }
    }
  }
</script>

<style lang="less" scoped>
  @import "../style/mixin.less";

  .login_page {
    width: 100%;
    height: 100%;
    background-color: #fff;
  }

  .manage_tip {
    position: absolute;
    width: 100%;
    top: -100px;
    left: 0;
    p {
      font-size: 34px;
      font-family: 'Microsoft YaHei UI';
      color: #000;
    }
  }

  .form_contianer {
    .wh(320px, 330px);
    .ctp(320px, 210px);
    padding: 25px;
    border-radius: 5px;
    text-align: center;
    background-color: #fff;
    -webkit-box-shadow: 0 0 10px rgba(185, 201, 201, 0.5);
    -moz-box-shadow: 0 0 10px rgba(185, 201, 201, 0.5);
    box-shadow: 0 0 10px rgba(185, 201, 201, 0.5);
    .submit_btn {
      width: 100%;
      font-size: 16px;
    }
  }

  .tip {
    font-size: 12px;
    color: #808080;
  }

  .form-fade-enter-active,
  .form-fade-leave-active {
    transition: all 1s;
  }

  .form-fade-enter,
  .form-fade-leave-active {
    transform: translate3d(0, -50px, 0);
    opacity: 0;
  }
</style>

